Dont know if its an option but depending on how many your looking for, have you thought about building your own. I recently just did five 20 high verts and made each kit myself. Not as hard as one thinks and it def saved on shipping and price.
I got the glass cut at an ace and once at lowes. And just ordered the living hinge from a local reef store.
But like I said it depends on how many your doing. Any questions feel free to ask!